Murray Spoelstra
  • Male
  • Pretoria, Gauteng
  • South Africa
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Latest Activity

Murray Spoelstra commented on Murray Spoelstra's blog post Folding Quadcopter for the holidays
"I use center board 198 x 76.2mm to allow for some manufacturing tolerances. Arms lengths are 258mm. On page 12 of this blog you can see more dimensions on drawing done by mdrm. Also picture of the current configuration I am still flying of this…"
Apr 11
jadwin edison commented on Murray Spoelstra's blog post Folding Quadcopter for the holidays
"what size of the center board between front and rear ?how long for the arms on the rear and Front ?"Thankyou "
Apr 8
Nicholas du Toit left a comment for Murray Spoelstra
"Hi Murray, I am new to Multicopters or indeed any type of radio controlled vehicle, but i have developed a keep interest into Multicopters. It just so happens that i am also from Pretoria. I've been looking around but can't seem to locate…"
Apr 10, 2014
Murray Spoelstra commented on Dennis Okeefe's blog post Using my APM as a data logger for a dragster....
"We did something similar recently building a data logger for aircraft.Have a look at http://diydrones.com/profiles/blogs/apm-as-a-flight-data-recorder In short, if you want to log data onboard for extended periods, get a Pixhawk. We also learned a…"
Mar 19, 2014
Kai Gonet commented on Murray Spoelstra's blog post APM as a flight data recorder
"@ AndrewTridgell or other PX4FMU user did anyone of you used the Pixhawk as a stand alone datalogger? Thanks"
Feb 14, 2014
Stephen Gloor commented on Murray Spoelstra's blog post APM as a flight data recorder
"Pixhawk sounds like the easiest plan."
Feb 12, 2014
Murray Spoelstra commented on Murray Spoelstra's blog post APM as a flight data recorder
"Another good reason to upgrade to Pixhawk. Thanks."
Feb 12, 2014

Developer
Andrew Tridgell commented on Murray Spoelstra's blog post APM as a flight data recorder
"The simplest is to use a PX4 or Pixhawk, which logs to a microSD card. You should have enough space for weeks of logs. Cheers, Tridge "
Feb 12, 2014
Murray Spoelstra commented on Murray Spoelstra's blog post APM as a flight data recorder
"Thanks Stephen, I'll look into that option. Sounds like quite a lot of hardware though that could start interfering with the compass in the box. Can't I just write code to redirect the onboard logging to one of the spare serial ports where…"
Feb 11, 2014
Stephen Gloor commented on Murray Spoelstra's blog post APM as a flight data recorder
"Hi Murray, Why not put a BeagleBone Black in the box with the APM and connect it up using the USB cable.  The BBB will power the APM via the USB connection so you would only have to power the BBB.  BBBs are about $50 and work really well.…"
Feb 11, 2014

Developer
Arthur Benemann commented on Murray Spoelstra's blog post APM as a flight data recorder
"Hello Murray, You might want to give a test on DroidPlanner as it has a HUD with more information than AndroPilot."
Feb 11, 2014
Marek commented on Murray Spoelstra's blog post APM as a flight data recorder
Feb 11, 2014
Murray Spoelstra commented on Murray Spoelstra's blog post APM as a flight data recorder
"Interesting to see these other applications for the APM. I'll be sure that there is a reliable manual overide before I let the APM control the plane I'm in though! We are still working on a good solution to record data of flights longer…"
Feb 11, 2014
Marek commented on Murray Spoelstra's blog post APM as a flight data recorder
"PS APM was powered on during flight, so "home" is not on the ground."
Feb 11, 2014
Marek commented on Murray Spoelstra's blog post APM as a flight data recorder
"Here are two link for logs (one from Mission Planner, second from APM) from my flight in December 2013: http://serwer1391635.home.pl/download/log_1.zip http://serwer1391635.home.pl/download/log_2.zip Both from the same flight:  airplane -…"
Feb 11, 2014
UAS_Pilot commented on Murray Spoelstra's blog post APM as a flight data recorder
"I am in the process of using an APM for a data recorder on a UAS. We have an Israeli UAS and we put the APM in side the airframe to record and transmit the data back to custom software that takes samples from the UAS telemetry and the APM…"
Feb 11, 2014

Profile Information

About Me:
Consulting Aeronautical Engineer with 2year old twin boys
Please tell us a bit about your UAV interest
Interesting hobby with ability to create fun aerial footage
Hometown:
Pretoria

Murray Spoelstra's Blog

APM as a flight data recorder

Posted on February 11, 2014 at 1:00am 23 Comments

We tried using an APM 2.5 as a flight data recorder in a Cessna 208B. It was built into a 3D printed box with own power supply and recording done on a mobile phone.

There is one problem though: When the aircraft is in a steady bank the APM HUD indicates horizontal attitude as the resultant g-load is…

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Folding Quadcopter for the holidays

Posted on December 20, 2012 at 8:23am 148 Comments



Not much space if you're going on holiday with the family in a Renault Clio. This design…

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Comment Wall (5 comments)

At 12:07am on November 26, 2013, Malan Silva said…

Hi Murray, I am a newbie to multirotor stuff. I was wondering if I could buy a frame kit of your folding quad.-Malan 

At 7:39am on November 26, 2013, Murray Spoelstra said…

Hi Malan,

I might be able to put something together. Is it for 15" props? And with the electronics box, foam underneath and removable camera mount?

At 11:33am on November 26, 2013, Malan Silva said…
Hi Murray, 
Thank you! I have a turnigy talon V2 set-up with extended booms (14mm X 320mm), 360kv RC timer motors, and 17.5" props. This set-up although flies longer than 30mins is a pain to transport.
I was hoping to transfer these components to your frame. 
It'll be great if you can make the center plates for me scaled so that there is space to fit hobbyking quattro ESC (70X70mm) between the middle booms. Can you please make that for me? PM me with your details so I can paypal you. 

At 1:29am on December 5, 2013, Murray Spoelstra said…

Hi Malan,

Sorry, I'm a bit busy with year-end rush at the moment, but would still want to help you. My estimate is that I could have it done by around the 16th Dec. It will be with 70mm between middle tubes, but for the motor arms you have two options: 12mm square Aluminium tubes or 10mm carbon tubes with 12mm squares at ends.

Let me know what you prefer. I'm thinking of building one for myself with 17.5" props.

I estimate the cost will be $100 max.

At 9:45am on April 10, 2014, Nicholas du Toit said…

Hi Murray,

I am new to Multicopters or indeed any type of radio controlled vehicle, but i have developed a keep interest into Multicopters. It just so happens that i am also from Pretoria.

I've been looking around but can't seem to locate a store which sells parts locally. Could you please give me the name of the store or website you source from? It really would be a great help

Thank you

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